Lock slider for separable fasteners



July 14, 194 2. D. MARINSKY 2,289,585

v LOCK SLIDER FORv SEPARABLE FASTENERS Filed June 4, 1940 x 4 as T in 1 33a l y4 4 I a ATTORNEYS Fig. 4; and

Patented July 14, 1 942 I 2,289,585 I LOOK srm'rarolt ssmmnm FASTENERS Davis Marinsky, Bronx, N. Y., "assignor, by meme assignments, of one-half to said Davis Marlnsky and one-half to Louis B. Morin, both of Bronx,

Application June 4,1940, Serial No. 338,705

11 Claims.

This invention relates to lock sliders for separable fasteners employing stringers wherein the slider may be positively and yieldably retained against movement longitudinally of the stringers with a pull engaging a spring actuated lock element to release the'element in operating the slider in both directions on the'stringers. More particularly the invention relates to a lock slider employing what might be termed a rocker lock element having a spring normally supporting the lock pin of the element in operating position with cooperating means between the pull and the element to rock said element into raised or inoperative position in moving the slider in both directions on the stringer. The novel features of the invention will be best understood from the following description when taken together with the accompanying drawing in which certain embodiments of the invention are disclosed and in which the separate parts are designated by suitable reference characters in each of the views and in which: I

Fig. 1 is a plan view of one form of slider with parts of the construction broken away and in section Fig.2 is a partial section on the line 2-2 "of Fig. 1. 1

Fig. 3 is a view similar to Fig. 2, showing only a part of the construction with parts in a different position.

Fig. 4 is a view similar to Fig. 1 showing an other adaptation of the invention.

Fig. 5 is a section on the broken line 5-5 of Fig. 6 is a detail view of a modified form of lock element which I employ- In the accompanying drawing, the invention is shown applied to the plastic type of sliders composed of such materials for example as cellulose acetate, wherein the parts may be die cast in accordance with known processes. derstood, however, that the invention is applicable to the metallic type of fastener, in which lattionable features to the more conventional fixed pivots are obviated in the present construction. Still further, a slider of the class described will render long life and service by reason of the simpie and yet sturdy construction of the parts, and

particularly the lock element employed. .Further, it will appear that byemploying a rocker-like element, the slider is adaptable for locking engagement in retaining the slider against movement '10 in both directions on the stringer, thus providing a slider which may be utilized as what is commonly termed a reversible lock slider, suitable for use on leggings, and other articles.

In Figs. 1 to 3 inclusive is shown one adaptation of the invention. In these'figures, l0 represents a slider body which, in the structure shown,

is formed from die cast plastic material. The body comprises a top wall II and bottom wall l2. These walls are spaced apart at the wide end by the connecting web N which divides the wide of the stringers into and through the slider as is end oi the body into two channels which converge into a single channel at the narrow end.

Both top and bottom walls have the usual in turned flanges ll which guide the links or scoops now well known in this art.

The top wall of the slider is and in close proximity to the irmer end of the web It with a transverse aperture 15' which flares outwardly through the outer surface of the wall 40 key lugs It will be unter event, certain changes will be made adapting the device to sliders composed of metallic materials. Considering the slider from the standpoint of the plastic construction, it will readily appear that several parts are of simple andsturdy construction, and sufllcient clearances are provided between the operative and interengaglng parts to provide free; action ofthe parts at all times regardless of any variations in the contour of the parts, particularly whe subjected to vdiil'rent temperatures, which in ht cause swelling or distortion to the parts. -In other words, the objec- H as clearly seen in Fig. 2 of the drawing, thus forming at the inner surface of the wall ll relatively contracted .corners IS. The outer surface of the wall ii is also provided, at longitudinally 35 spaced intervals centrally of the slider,

with recesses II for receiving projecting key lugs IS on I a pivot hood is which extends centrally and lon- 'gitudinally of the wall ll of the slider., v

The hood I! is cementedto the wall II and the i8 simply serve to locate the hood in proper position while 'at the same time forming keys which give greater strength to the bonding between the parts as will be apparent. The hood I! has'centrally thereof a large'recess 20 opening through the lower surface of the hood to regwith large pivot apertures is in the form of a hexagonal ister with the aperture l5. largedadjacent the wall thereof to form sockets 2 l recessedportion 20 of the H and at the ends The side walls of the hood I! are provided 22 for receiving the transversepivot pin or other part 23 of a pull 24. In the construction shown in Fig. 1, the pull 24 ring. .It will be apparent that pulls of the type substantially slm- 5 ilarto that shown in Fig. 4 may also employed.

provided centrally The recess 20 is enrow :02.

At 25 is disclosed the lock element which, for purposes of description, may be termed a rocker element by reason of the fact that this element rocks upon the wall ll within the recess -,2| in controlling engagement and disengagement of thestringers. The element is more or less in a form of an elliptical block, the elliptical contour being modified solely by the downwardly projecting pin or bar portion 26 for engaging the links of the stringers passing through the channels of the slider body, and by a pivot aperture 21 formed centrally and transversely'of the element in opening through the upper surface thereof. The elliptical formation of the element 25 forms rounded ends 28, 28a which, in the rocking movement 'of the element, are adapted to enter the sockets 2! in the manner illustrated in Fig. 3 of the drawing.

Arranged within the recess 20 is a cross-shaped spring 29, the central portion of which; has laterally extending ends 35, one of which is shown in Fig. 1 of the drawing. The ends so are adapted to seat in vertical slots 20a formed in inner surfaces of the side walls of the hood is or the recessed portion 20 thereof. The spring 29 also includes longitudinally extending curved spring arms 3! of the general contour seen in Fig.

2 of the drawing, which rest upon the upper rounded surfaces of the element 25 and serve to normally urge the pin portion 25 into the channel of the slider, as will be apparent.

The pivot portion 23 operates freely within the aperture 21 of the element 25. In other words, the element 25 is free to move vertically against the action of the spring 29; In the use of the slider when the pull is'raised to move the slider longitudinally of the stringers substantially in the manner indicated in Fig. 3, a pull in the direction of the arrow M, Fig. 3, will cause the element 25 to be rocked or tilted into the position shown in Fig. 3, moving the pin 2% out of the channel of the slider as will be apparent. In operating the slider in the opposite direction, as indicated by the arrow 032, Fig. 3, the pull will naturally be extended in this direction on the slider and the element 25 rocked or tilted in the opposite direction to that shown, accomplishing the same result.

It will be apparent that" a tendency to move the slider along the stringers in either direction without engaging or operating the pull, and particularly the normal tendency to move the slider in the direction of the arrow azi when a stress or strain is placed on the stringers tending to separate the same, will be checked by movement of the pin or bar-26 by one'of the stringer links into engagement'with the corner It, or the comer i5, when the pull is moved in the direction of the ar- Thus the progress of the slider is checked. However, in certain adaptations of the invention where positive locking engagement against any force isundesirable, the member 26 may be rounded in the manner illustrated in Fig. 6 of the drawing so that in such cases when excessive stresses or strains prevail, the lock element may be forced outwardly against the action of the spring to permit the slider to move longitudinally of the stringers. In such cases, however, the tension'of the spring will be made to suit the particular uses for which the slider is intended. In other words, in some instances,

light tension sfrings will be used and in other J instanceshea ier tension springs. In Figs. 4 and 5 of the drawing Ihave shown slight modifications of the structure as seen in Figs. 1 to 3 inclusive. These changes consirtprimarily in providing a shorter but wider hood 32 which terminates short of the wide end of the slider and is contracted or pointed at the narrow end of the slider as seen at 32a. In this construction a lock element 33 is employed which differs from the element 25 primarily in having the lock pin portion 34 disposed at one side only of the element, namely the left side as indicated in dotted lines in Fig. 4 of the drawing so as to pass through an aperture 35 formed in the top wall H a of the slider to engage the links of the lefthand stringer only.

Another distinction in the construction of the element 33 lies in the fact that the upper end of the apertured portion 36 thereof has inturned members 31 which are turned inwardly after the pivot 38 of the pull 39 has been inserted inthe aperture, thus retaining the element 33 against displacement from the pull and thus insuring positive relationship of the parts 33, 38 at all times. The pull 39 is of the more conventional form and the end portion thereof adjacent the pivot pin 38 is apertured as seen at til to fit freely over the pointed end portion 32a of the hood 32, while at the same time being so shaped as to allow the pull to drop over the other end portion 32b of the hood when the slider is used in the reverse position.

The hood 32 is provided with a recess ii much the same as the recess 29, but instead of providing large semi-circular apertures 22 in the side walls of the recessed portion of the hood the apertures are made wider and arched as indi cated at 62, 53, to form recessed portions into which the pivot 38 can pass in moving the slider longitudinally of the stringers in both directions. In other words, when the slider is moved by the pull 39 in the direction similar to the arrow 03E of Fig. 3, the pivot 38 moves into the arched portion d2, whereas when moved in the opposite direction, the pivot 58 moves into the arched portiondii. The hood 32 is secured in position the same as with the structure shown in Figs. 1 and 2, therefore, further description in this regard is unnecessary.

A spring it substantially similar to the spring 29 is employed, being provided at each side with terminal extensions t5, one of which is shown in Fig. 4, entering the vertical recesses t6 similar tothe recesses 200.. It will be understood that in both instances the recesses 28a, 36 open through the lower surface of the side walls of the hood so as to provide free mounting of the springs in the hood. However, these springs may be snapped into socket portions, if desired, so as to be retained against accidental displacement from the hoods.

The operation of the structure shown in Figs. 4 and 5 will be substantially the same as that described in connection with Figs. 1 to 3 inclusive. With regard to the yieldable movement of the slider when subjected to excessive stresses and strains, a lock element such as shown at 33c in' Fig. 6 will be employed. This element differs from the element shown in Figs. 5 and 6 in rounding the lower portion of the pin 34a as seen at 34b. These rounded corners will allow the fastener links to cam over the lower corners lie, thus preventing a positive locking engagement of the slider. However, this camming action must resist the tension of the spring which is employed to normally urge the lock element in its operative position. In both forms of construction, it will appear that sumcient clearance is .the pivots of the pull, or in other words, without transmitting any appreciable movement to the pull.

Having fully described my invention, what I the bearing portion of said element to tilt the same into inoperative position in moving the slider in eitheroftwo directions by said pull, and

claim as new and desire to secure by Letters Patent. is: v

1. In a lock slider of the class described comprising a channeled slider body having a hood portion on one wall thereof, a lock element for free tiltable movement on the slider wall-within said hood portion, said element comprising a substantially elliptical member having a thick central portion with reduced rounded ends, the central portion having a projection forming a pin element for entering the channel of the slider body, and said central portion having a transverse aperture therein to receive a pull member.

2. In a lock slider of the class described comprising a channeled slider body having a hood portion on one wall thereof, a-lock element for free tiltable movement on the slider wall within said hood portion, said element comprising a substantially elliptical member having a thick central portion with reduced rounded ends, the central portion having-a projection forming a pin element for entering the channel of the slider body, and a transverse aperture therein to receive a pull member, the pin portion of said member being disposed at one side only thereof.

3. Aslider of the class described comprising a channeled slider body having an aperture in one wall thereof opening into the channel of said body, ahood mounted on said wall, said hood having a socket portion in registering alinement with the aperture in the slider wall, said socket having enlarged pivot portions at the ends thereof,a tiltable lockelement arranged in saidsocket, a pin portion on said element projecting into the channel of said body through said aperture, said element having rounded ends adapted to be moved into the pivot portions of said hood in the tilting movement of said element, a spring having oppositely extending spring arms arranged in said socket with the arms ,engaging the end portions of said element to normally support the element in locked position," and a pull having a pivot portion passed through said hood and in operative engagement with said element to 'tilt the same into inoperative'positionin moving the slider in either of twodirections by said pull.

4. A slider of the class described comprising a channeled slider'bodyhaving an aperture in one wall thereof opening into the channel of said body, a hood mounted on said wall, said hood having side apertures invthe side walls and having a socket portion in registering alinement with the aperwalls and a top and provided with means for maintaining said spring against displacement in said hood.

5. A slider of the class described comprising a channeled slider body having an aperture in one wall thereof opening into the channel of said body, a hood mounted on said wall, said hood having a socket portion in registering alinement with theaperture in the slider wall, said socket having enlarged pivotportions at the ends thereof, a tiltable lock element arranged in said socket and provided with a bearing portion, a

pin portion on said element projecting into the channel of said body through said aperture, said element having rounded ends adapted to be moved into the pivot portions of said hood in the tilting movement of said element, a spring having oppositely extending spring arms arranged in said socket with the arms engaging the end portions of said element to normally support the element in locked position, a pull having a pivot portion extending through the apertures in the side walls of said hood and in pivotal engagement with theibearing portion of said element to tilt the same into inoperative position in moving the slider in either of two directions by said pull, means for maintaining said spring against displacement in said hood, and bearing ,means on 'the element for retaining the pivot of said pull against displacement from said element. V V

6. A slider of the class described comprising a channeled slider body having an aperture in one wall thereof opening into the channel of said body, a hood mounted on said wall, said hood having a socket portion in registering alinement with the aperture in the slider wall, said socket having enlarged pivot portions at the ends thereof, a tiltable lock element arranged in said socket, and provided with a bearing portion, a pin portion on said element projecting into the channel of said body through said aperture, said element having rounded ends adapted to be moved into the pivot portions of said hood in the tilting movement of said element, a spring having oppositely extending spring arms arranged in said socket with the arms engaging the end portions of said element to normally support the element in locked position, a pull having a pivot portion extending through the apertures in the side walls-of said hood and in pivotal engagement with the bearing portion of said element to tilt the same into inoperative position in moving the slider in either of two directions by said pull, and means on the spring providing outward movement of said element against the action of said spring on the pivot of said pull.

7. A- lock slider for separable fasteners of the classdescribed comprising a channel partly deture in the slider'walL-said socket having enlarged pivot portions at the ends thereof, able lock element arranged in said socket and provided with abearing portion, a pin portion on said element projecting intothe channel of said body-through said aperture, said element having rounded ends adapted-to be moved into the pivot portions of said-hood in the tilting movement of said element, ,a spring having oppositely extending spring arms arranged in said socket with the arms engaging the end portions of said element to normally support the element in locked position a pullhaving'a pivot portion extending through said apertures in the side a tilt-,

fined by a bottom wall and a top wall; said top wall supporting a hood portion and having an aperture registering with said channel and aligned with ,a recess in the hood portion; the recess and aperture forminga chamber receiving a rocking lock element having a central portion andend portions; said rocking element having walls of the hood and in pivotal engagement with rock; resilient means in said chamber normally 4- I 2,289,585 holding said lock element with the pin projection thereon engaging the linksand pull means pivoted on said element to rock it and thereby disengage the pin projection from engagementvwith the links.

8. A lock slider for separable fasteners of the class described comprising a channel partly defined by a bottom wall and a top well; said top wall supporting a hood portion and having an aperture registering with said channel and aligned with a recess in the hood portion; the recess and aperture forming a chamber receiving a rocking lock element having a central portion and contracted ends; said rocking element having rocking surfaces located between the ends and central portion thereof, said rocking surfaces partly defining a pin projection, on the said element, extending through said aperture to engage the links of said fasteners; said aperture having edges complementary to the mid rocking surfaces, respectively, and forming bearings on which said rocking element is adapted to rock; resilient means in said chamber normally holding said lock element with the pin projection thereon engaging the links and pull means pivotally mounted onsaid lock element to rock said element against the action of said resilient means and thereby disengage the pin'projection from engagement with the links.

9. A look spider for separable fasteners of the class described comprising a channel partly defined by a bottom wall and a top wall; said top wall supporting a hood portion and having an aperture registering with said channel and aligned with a recess in the hood portion; the recess and aperture forming a chamber receiving a rocking lock element having a central portion and contracted ends; said rocking element having rocking surfaces located between the ends and central portion thereof, said rocking surfacespartly defininga pin projection, on the said element, extending through said aperture to engage the links of said fasteners, said rocking element also having spring engaging surfaces be- .tween the ends and central portion thereof and in oppositely disposed relation to said rocking surfaces; said aperture having edges complementary to the said rocking surfaces, respec-.

tively, and forming bearings on which said rocking element is adapted to rock; spring means in said chamber engaging the spring-engaging surfaces of the rocking element and normally holding said lock element with the pin projection thereon engaging the links. and pull means pivotally mounted on said lock element to rock said element and thereby disengage the pin projection from engagement with the links.

10. A look slider for separable fasteners of the class described comprising a channel partly defined by a bottom wall and a top wall; said top wall supporting a hood portion and having an aperture registering with said channel and aligned with a recess in the hood portion; the recess and aperture forming a chamber receiving a lock element having a section which is generally that of an ellipse having a long and short axis; said lock element having arcuately-shaped surfaces, concave toward said aperture, which surfaces partly define a pin projection on said element, extending through said aperture in the direction of the said short axis and adapted to engage the links of said fasteners; said aperture having arcuately-shaped edges convex toward said element, complementary to the concave surfaces of said locking element and forming bearing surfaces on which the said element is adapted to rock; resilient meansin said chamber normally holding said lock element with the pin projection thereon engaging the links; and

5 means to rock the lock element against the action of said resilient means to disengage the pin from gengagement with the links.

11. A look slider for separable fasteners of the class described comprising a channel partly defined by a bottom wall and a top wall; -said top wall supporting a hood portion and having an aperture registering with said channel and aligned with a recess in the hood portion, the recess and aperture forming a chamber receiving a lock element having a section which is generally that of an ellipse having a long and short axis; said lock element having arcuately-sh'aped surfaces, concave toward said aperture, which sur- I faces partly define a'pin projection on said element, extending through said aperture in the direction of the said short axis and adapted to engage the links of said fasteners; said aperture having arcuately-shaped' edges convex toward said element, complementary, respectively, to the concave surfaces of said locking element and forming bearing surfaces on which the said element is adapted to rock; resilient means in said chamber normally holding said lock element with the pin projection thereon engaging the links; and pull means pivotally mounted on said lock element to rock said element and thereby disengage the pin projection from engagement with the links.

DAVIS MARINSKY. 

